Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 7, NWS Lincoln, IL

April 20, 2004Woodford County, Illinois

NWS Lincoln, IL issued this tornado warning at Apr 20, 2004, 6:05 PM CDT for Woodford County, Illinois. It was in force for 55 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 20, 2004, 6:05 PM CDT (23:05 UTC)
Expired: Apr 20, 2004, 7:00 PM CDT
In force: 55 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Woodford County, IL

What was reported inside it

Time	Report	Where	Remark
Apr 20, 6:22 PM CDT	HAIL 0.88	1 W El Paso, IL
Apr 20, 6:22 PM CDT	HAIL 0.88	1 W El Paso, IL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 20, 5:40 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.1 hours before the alert went out and 78 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1297 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KILX 202305
TORILX
ILC203-210000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
605 PM CDT TUE APR 20 2004

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  WOODFORD COUNTY IN CENTRAL ILLINOIS

* UNTIL 700 PM CDT

* AT 605 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
  ROTATION OVER GOODFIELD...OR ABOUT 10 MILES SOUTH OF EUREKA...
  MOVING NORTHEAST AT 35 MPH. THIS STORM COULD PRODUCE A TORNADO AT
  ANY TIME. IN ADDITION TO THE THREAT OF A TORNADO...LARGE HAIL AND
  DAMAGING WINDS CAN BE EXPECTED WITH THIS STORM. GO TO A SAFE PLACE
  NOW

* THE TORNADO IS EXPECTED TO BE NEAR...
  CONGERVILLE
  EUREKA
  SECOR
  EL PASO
  KAPPA
  PANOLA

IF YOU ARE IN THE PATH OF THIS STORM...TAKE COVER IN A BASEMENT OR
INTERIOR ROOM ON THE LOWEST FLOOR. VEHICLES AND MOBILE HOMES SHOULD
BE ABANDONED FOR A SAFER SHELTER.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR LOCAL ESDA...OR THE
NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER
SERVICE. STAY TUNED FOR LATER STATEMENTS.

LAT...LON 4078 8894 4077 8899 4070 8900 4064 8910
          4062 8922 4063 8932 4067 8932 4075 8924
          4083 8908 4091 8894

$$

BAK

NNNN

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 20, 2:30 PM CDT	Tornado Warning	ILX	Champaign	45 min
Apr 20, 4:42 PM CDT	Severe Thunderstorm Warning	ILX	Mason	63 min
Apr 20, 5:11 PM CDT	Tornado Warning	ILX	Marshall	64 min
Apr 20, 5:14 PM CDT	Severe Thunderstorm Warning	ILX	Tazewell	61 min
Apr 20, 5:27 PM CDT	Tornado Warning	ILX	Tazewell	63 min
Apr 20, 5:49 PM CDT	Tornado Warning	ILX	Knox, Stark	41 min
Apr 20, 5:51 PM CDT	Tornado Warning	ILX	Marshall	9 min
Apr 20, 5:55 PM CDT	Severe Thunderstorm Warning	ILX	McLean	35 min
Apr 20, 5:55 PM CDT	Tornado Warning	ILX	Marshall	35 min

Nearby

Tornado Warnings in Illinois, 2004 Every tornado warning in 2004 Tornadoes in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.